You will then be directed to begin setting up your account. The app will now generate 2FA codes for Coinbase that change every few seconds. And if you’re not working on the blockchain, there’s not much you can do to ensure that the verification of your transaction history or your account is taking place on the blockchain. In the case of Bitcoin, miners run computer programs to verify the data that creates a complete transaction history of all Bitcoin. Because the blockchain works by verifying transaction history, and this verification process is labor-intensive and slow, only so many transactions can be verified in a certain timespan. Of course, if the value goes down, you will have lost money.